Merge proxy support back in ??

[kaihendry]

Hi Mike,

Do you think you could please re-merge in Proxy support into HTTPObserver? I'm not sure why it didn't make it to master, but was present in https://github.com/Webconverger/webc/blob/master/etc/webc/extensions/webconverger/modules/webconvergerModule.jsm

0fcdf61

[kaihendry]

On further investigation, I've noticed no Webconverger customer actually using extensions.webconverger.proxyusername. So maybe we should leave it out? =)

[mkaply]

I think we should put it in. No harm.

[mkaply]

#52